Kingdoms Defined;

Definitions of Kingdom on the Web:
  • a domain in which something is dominant; "the untroubled kingdom of reason"; "a land of make-believe"; "the rise of the realm of cotton in the ...
  • a country with a king as head of state
  • the domain ruled by a king or queen
  • the highest taxonomic group into which organisms are grouped; one of five biological categories: Monera or Protoctista or Plantae or Fungi or Animalia
  • a basic group of natural objects

wordnetweb.princeton.edu/perl/webwn
http://www.google.com.au/search?hl=en&um=1&q=define%3AKingdom&ie=UTF-8&sa=N&tab=iw&start=0